Car-wheel.



' :PATENTED JUNE 23, 1908. w. n. LOWRY.

GAR WHEEL.

APPLICATION FILED MAR- 9'. 1908.

g r w citizen of wheel and into For ,the purpose of holding them together 7 WILLIAM D. LOWRY, OF ST. LOUIS, MISSOURI.

GAR-WHEEL.

Specification of Letters Patent.

'Patented June 23, 1908.

Application flied March 9, 1908. Serial No. 419,911.

To all whom it may concern:

Be it known that I, WILLIAM D. LowRY, a the United States of America, re siding in the city of St. Louis and State of Missouri, have invented certain new and useful Im the fol owing is a full, clear, and exact description, reference being had to the accomipanying drawing, forming part of this specication.

A very great objection has'e'xisted in cast lI'OIl car wheels, due to the fact that they crack or break at the point where the flange of the wheel diverges from the tread, this being largely caused by the strainthat is brought to bear on the flange as a car rounds a curve in a track and the flange is forced over against the rail.

The object of my invention is to make a car wheel whichwill have the usual characteristics of such a wheel, but will not be subject to this defect and to this end I insert within the wheel metallic strips of greater tensile strength than cast iron has, for instance strips of steel.

My invention consists in making a car wheel composed of cast iron with an insert that lies within the outer surface and which has a greater tensile strength than cast iron, these inserts extending across or substantially across the plane of the tread of the wheel and into the flange of the wheel.

Figure I is a detail section of my improved wheel. Fig. II 1s a section taken on line IIII, Fig. I. Fig. III is a detail view showing art of the cope and palt of the drag of a mold with the insert in position.

1 represents the body ofthe wheel, 2 the tread, and 3 the. flange. I

A represents the cope, and B thedrag of a mold in which my improved wheelmay be cast.

Thewheel is of the usual exterior conformation, but has an insert within the outer surface of the .wheel, consisting of'strips 4 of metal which are of greater tensile strength than cast iron, ,steel /being thepreferable metal used for these strips. The strips are located close together as shown in the drawings', and they extend across the tread of the the flange, as shown in Fig. I

rovements in Car-Wheels, ,of which that it may be of some I which the body of substantially as set forth;

until the casting is made, I employ cross strips 5 which are interwoven withthestrips 4 to hold the latter in position.

By the use of the strips 4, the flange of the wheel is so strengthened as to resist strain brought upon it by striking the rail of a trackin roundin a curve or in the lateral vibration invention protect the I checking or breaking of the wheels at orabout the oint where the flange joins with the tread, (Inc to unequal expansion caused by the heating of .the tread: of the wheels when the brakes are ap lied on long downgrades, which heat is f to the flanges of the wheels 'with whic brake shoes do not come in contact.

o course,.n0t a plied the While Ihave shown and described the insert as composed of strips, yet it is possible other form, such as a thin sheet erforated or not) of steel or other metal having greater tensile strength than cast iron.

I claim:

an insert embedded within ich extends into the tread car wheel havin its flange and w of the wheel; said insert being composed of metal strips of greater tensile strength than the metal "of which the body of the wheel is composed, substantially as set-forth.

- 2. As a new article of car Wheel having an insert embedded within its bearing surface and which is composed of metal strips which extend acrossthe tread of the wheel and-into the flan eand' which are of greater tensile strength t an the body of the wheel, substantially asset forth.

3. As a new article of manufacture, a cast car wheel having an'ins ert embedded in the flange and tread thereof and which is of greater tensile strength thanthe metal of the wheel is composed,

WM. D. LOWRY. In presence of- BLANCHE HOGAN, HOWARD'G. CooK.

manufacture, a cast. 

